DRV8434S SPI Stepper Motor Driver Carrier, 2A Max. Current Limit

Pololu item #: 3768
Brand: Pololu supply outlook
Status: Rationed (Active and Preferred) 
RoHS 3 compliant

Price break Unit price (US$)
1 12.95
5 11.91


backorders allowed

This breakout board for TI’s DRV8434S microstepping bipolar stepper motor driver operates from 4.5 V to 48 V and can deliver up to approximately 1.2 A continuous per phase without a heat sink or forced air flow (2 A peak). The SPI interface allows configuration of the current limit, step mode (11 step modes from full-step through 1/256-step), decay mode, and stall detection. The driver also features built-in protection against under-voltage, over-current, and over-temperature conditions. This version of has the maximum current limit set to a fixed 2A, and SPI can be used to set the actual current limit to any of 16 evenly spaced values from 125 mA up to 2 A (i.e. in increments of 125 mA).

Alternatives available with variations in these parameter(s): current limit control header pins soldered? Select variant…

 Description Specs (14) Pictures (8) Resources (8) FAQs (4) On the blog (1) 

Dimensions

Size: 0.6″ × 0.8″
Weight: 1.3 g1

General specifications

Minimum operating voltage: 4.5 V2
Maximum operating voltage: 48 V3
Continuous current per phase: 1.2 A4
Maximum current per phase: 2 A5
Minimum logic voltage: 1.8 V6
Maximum logic voltage: 5.5 V7
Microstep resolutions: full with 100% current, full with 70% current, non-circular 1/2, 1/2, 1/4, 1/8, 1/16, 1/32, 1/64, 1/128, 1/256
Current limit control: fixed 2A max with SPI scaling
Reverse voltage protection?: N
Header pins soldered?: N

Identifying markings

PCB dev codes: md43b
Other PCB markings: 0J13692

Notes:

1
Without included optional headers.
2
Inputs below 6 V reduce the maximum settable current limit. With 4.5 V in the maximum settable limit is 1.75 A.
3
Not intended for use with 48V batteries, which can be well above nominal when fully charged.
4
Without a heat sink or forced air flow.
5
With sufficient additional cooling.
6
Logic high threshold varies for two-state, tri-state, and quad-state pins. See datasheet for details.
7
Absolute maximum voltage on any input is 5.75 V.

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